- prefix = namespace + "[#{f.index}]"
.nested-fields.working-period
  = link_to_remove_nested_association('working-period', f)
  = f.datetime_range start_input_html: { class: "intervention-started-at", data: { intervention_updater: prefix + 'started_at' }}, stop_input_html: { data: { intervention_updater: prefix + 'stopped_at' }}
